What would be the best full exhaust, I'm talking header, dp, and exhaust, if I'm just gonna put a stage 2 and Injen CAI?

PS. I've been leaning towards Borla or Magnaflow.

 

Hahn header/dp and ark n2 out the back...

 

From what I hear, Vibrant header and downpipe and full catback is the most power producing.

 

if its just a stage 2. stay with a 2.5 exhaust...

CTI with 3" dp to a 2.5 corsa tour exhaust... best set up and sound IMO

yea, get a shorty exhaust.... nice one

 

Keep in mind the stock piping is 2.5" up until the axle where it narrows down to 2.25".

The CTI 2.5" axle-back with magnaflow muffler and tip should suit your needs. Its essentially the same as the more expensive full magnaflow cat-back.

Link: http://www.ottperformance.com/Cobalt...duct_info.html

(if you are dead set on an actual cat-back, then I would highly recommend the 2.5" magnaflow one. It sounds awesome in person.)

As far as a header and downpipe you cant go wrong with Vibrant:

http://www.ottperformance.com/Cobalt...duct_info.html

 

Is CTI a good brand?

 

i have stage2 and intake+full exhst and put down 245 untuned with Cobalt addiction V2 header,ZZP 3"to 2.5" down pipe and a 2.5 inch magnaflow exhst. great sound and power

 

The stock ss s/c exhaust acctually bottl necks at the O2 sensor and the flange are btwn the down pipe and resinator pipe, as well as the over axel. Correct those and its a true 2.5" front to back.

 

I'm selling my Full Exhaust for $500...

https://www.cobaltss.net/forums/parts-66/fs-s-c-parts-gmpp-exhaust-152306/

 

the jbp vortex longtube header is pretty bad ass